“We can just change what we eat,” explains Cameron. “Just eat less meat and dairy and your carbon footprint drops way down.”

When U.S. President Barack Obama visited Beijing last November, he and Chinese President Xi Jinping announced a landmark joint agreement to fight the effects of climate change. It committed the two nations to reducing planet-warming carbon emissions and cemented a first-ever pledge by China to stop its emissions from growing by 2030.

The accord was widely hailed as a crucial first step toward prompting other nations to make their own greenhouse gas cuts. This as a new global agreement on curbing climate change is expected to be signed this fall, by every nation around the globe, at a United Nations summit in Paris.